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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .loading{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            background: #ffffff;
        }
        .loading .pic{
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            bottom: 0;
            margin: auto;
            width: 50px;
            height: 50px;
        }
        .loading .pic i{
            float: left;
            display: block;
            width: 6px;
            height: 50px;
            background-color: #3CB371;
            margin:0 2px;
            transform: scaleY(0.4);
            animation: load 1.2s infinite;
        }
        .loading .pic i:nth-child(2){
             animation-delay: 0.1s;
        }
        .loading .pic i:nth-child(3){
            animation-delay: 0.2s;
        }
        .loading .pic i:nth-child(4){
            animation-delay: 0.3s;
        }
        .loading .pic i:nth-child(5){
            animation-delay: 0.4s;
        }
        img{
            width: 100%;
        }
        @keyframes load {
            0%, 40%, 100%{
                transform: scaleY(0.4);
            }
            20%{
                transform: scaleY(1);
            }
        }
    </style>
</head>
<body>
    <div class="loading">
        <div class="pic">
            <i></i>
            <i></i>
            <i></i>
            <i></i>
            <i></i>
        </div>
    </div>
    <img src="http://p19.qhimg.com/bdr/__/d/_open360/cartoonm0204/18.jpg" alt="">
    <img src="http://pic1.win4000.com/wallpaper/f/5858e88d30263.jpg" alt="">
    <img src="http://pic1.win4000.com/wallpaper/6/58dc740462889.jpg" alt="">
    <img src="http://joymepic.joyme.com/article/uploads/20174/191495170688718494.jpeg" alt="">
    <img src="http://pic1.win4000.com/wallpaper/0/591570f93ec32.jpg?down" alt="">
    <img src="http://img18.3lian.com/d/file/201709/14/4f4372ad7b000c6be5710c26830d6ce4.jpg" alt="">
    <img src="http://p19.qhimg.com/bdr/__/t016add3881db0e7cdb.jpg" alt="">
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    <img src="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1521520488483&di=aaf75b36e75710878f8496225a074c07&imgtype=0&src=http%3A%2F%2Ff.hiphotos.baidu.com%2Fzhidao%2Fpic%2Fitem%2Fb812c8fcc3cec3fda97ae7c2d788d43f869427c4.jpg" alt="">
    <img src="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1521520536748&di=12becea03a062e767da0783624ce27a6&imgtype=0&src=http%3A%2F%2Fpic1.16pic.com%2F00%2F08%2F36%2F16pic_836673_b.jpg" alt="">
    <script src="/jquery/dist/jquery.min.js"></script>
    <script>
        document.onreadystatechange  = function(){
            if(document.readyState == "complete"){
                $(".loading").fadeOut();
            };
        }
    </script>
</body>
</html>